| /* { dg-do run } */ |
| /* { dg-options "-O2 -fdump-tree-strlen" } */ |
| |
| #include "strlenopt.h" |
| |
| __attribute__((noinline, noclone)) size_t |
| fn1 (char *p, const char *r) |
| { |
| size_t len1 = strlen (r); |
| char *q = strchr (p, '\0'); |
| *q = '\0'; |
| return len1 - strlen (r); // This strlen should be optimized into len1. |
| } |
| |
| int |
| main (void) |
| { |
| char p[] = "foobar"; |
| const char *volatile q = "xyzzy"; |
| return fn1 (p, q); |
| } |
| |
| /* { dg-final { scan-tree-dump-times "strlen \\(" 2 "strlen1" } } */ |
| /* { dg-final { scan-tree-dump-times "strchr \\(" 0 "strlen1" } } */ |
